CN112737425B - Direct current brushless motor drive circuit based on CPLD control - Google Patents
Direct current brushless motor drive circuit based on CPLD control Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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Abstract
The invention discloses a direct current brushless motor driving circuit based on CPLD control, which comprises a control signal comparison circuit, a power bipolar transistor driving circuit and a three-phase direct current output circuit, wherein the control signal input and voltage signal comparison circuit is connected with the power bipolar transistor driving circuit, the power bipolar transistor driving circuit is connected with a three-phase direct current output circuit, the driving circuit can realize the control of the high-speed rotation of the direct current brushless motor of a dynamic tuning gyroscope, the circuit performance is stable, the direct current brushless motor driving circuit can be used in a system with poor environmental conditions and higher dynamic requirements, and is safe and reliable.
Description
Technical Field
The invention belongs to the technical field of control of a direct current brushless motor, and relates to a direct current brushless motor driving circuit based on CPLD control, which can be used in various dynamically tuned gyroscopes to control the direct current brushless motor of the gyroscope.
Background
With the development of science and technology, in the field of aviation various products, the control requirement for the brushless direct current motor in the tuning gyroscope is higher and higher, and the realization of accurate control of the brushless direct current motor is more important. The original brushless direct current motor control circuit has weak anti-interference capability and unstable circuit performance, and can not meet the long-term stable operation requirement of vehicle-mounted equipment.
Disclosure of Invention
The purpose of the invention is: the invention relates to a direct current brushless motor driving circuit based on CPLD control, which can be used for tuning the control of a direct current brushless motor of a gyroscope in the gyroscope by various powers.
The technical scheme of the invention is as follows:
a direct current brushless motor driving circuit based on CPLD control comprises a control signal comparison circuit, a power bipolar transistor driving circuit and a three-phase direct current output circuit, wherein the control signal comparison circuit is connected with the power bipolar transistor driving circuit, and the power bipolar transistor driving circuit is connected with the three-phase direct current output circuit.
Further, the voltage comparator comprises voltage comparators N1, N2 and N3, pull-down resistors R1, R2 and R3, CPLD control signals A, B and C are respectively connected with pins 3 of the voltage comparators N1, N2 and N3, pins 2 of the voltage comparators N1, N2 and N3 are all connected with reference voltage, pins 5 and 6 are respectively in short circuit, pin 8 is connected with voltage VCC, pin 1 and pin 4 are respectively connected with voltage VCC-, pin 7 of the voltage comparators N1, N2 and N3 is respectively connected with pull-down resistors R1, R2 and R3, and the other ends of the pull-down resistors R1, R2 and R3 are connected through common ground.
Further, pins 3 of the voltage comparators N1, N2, N3 are also connected with CPLD control signals a, B, C, respectively.
Further, the reference voltage connected to pin 2 of the voltage comparators N1, N2, N3 is 1.2V.
Further, the voltage VCC is 15V, and the voltage VCC-is-15V.
Further, the power bipolar transistor driving circuit comprises power bipolar transistors N4, N5, and N6, a pin 1 of the power bipolar transistor N4 is connected with one end of a pull-down resistor R1, a pin 1 of the power bipolar transistor N5 is connected with one end of a pull-down resistor R2, a pin 1 of the power bipolar transistor N6 is connected with one end of a pull-down resistor R3, pins 2 and 3 of the power bipolar transistor N4 are respectively connected with a voltage VCC2, pins 2 and 3 of the power bipolar transistor N5 are respectively connected with a voltage VCC2, pins 2 and 3 of the power bipolar transistor N6 are respectively connected with a voltage VCC2, pins 5 and 6 of the power bipolar transistor N4 are respectively connected with pins 5 and 6 of the power bipolar transistor N5, and pins 5 and 6 of the bipolar transistor N6 are both connected to a common terminal VSS, and a pin 4 of the power bipolar transistors N4, N5, N6 are respectively connected with positive terminals of high-speed switching diodes V2, V4, and V6.
The voltage VCC 2-is-15V.
Further, the three-phase direct current output circuit comprises high-speed switching diodes V1, V2, V3, V4, V5 and V6, current limiting resistors R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 and R15, and MOSFET array transistors N7, N8 and N9;
the negative end of the high-speed switch diode V1, one end of the current-limiting resistor R5, the positive end of the high-speed switch diode V2 and one end of the current-limiting resistor R7 are all connected with a pin 4 of a power bipolar transistor N4, the grid of the MOSFET array transistor N7A is connected with the other ends of the current-limiting resistors R4 and R5, and the grid of the MOSFET array transistor N7B is connected with the other ends of the current-limiting resistors R6 and R7;
the negative end of the high-speed switch diode V3, one end of the current-limiting resistor R9, the positive end of the high-speed switch diode V4 and one end of the current-limiting resistor R11 are all connected with the pin 4 of the power bipolar transistor N5, the grid of the MOSFET array transistor N8A is connected with the other ends of the current-limiting resistors R8 and R9, and the grid of the MOSFET array transistor N8B is connected with the other ends of the current-limiting resistors R10 and R11;
the negative end of the high-speed switch diode V5, one end of the current-limiting resistor R13, the positive end of the high-speed switch diode V6 and one end of the current-limiting resistor R15 are all connected with the pin 4 of the power bipolar transistor N6, the grid of the MOSFET array transistor N9A is connected with the other ends of the current-limiting resistors R12 and R13, and the grid of the MOSFET array transistor N9B is connected with the other ends of the current-limiting resistors R14 and R15;
the sources of MOSFET array transistors N7A, N8A, N9A are all connected to voltage VCC2-, and the sources of MOSFET array transistors N7B, N8B, N9B are all connected to voltage VSS.
Further, the drains of the MOSFET array transistors N7A, N8A, N9A are used as three-phase input of the dc brushless motor for driving the dc brushless motor.
The invention has the beneficial effects that:
the drive circuit can realize the control of the high-speed rotation of the DC brushless motor of the dynamic tuning gyroscope, has stable circuit performance, can work and use in a system with poor environmental conditions and higher dynamic requirements, is safe and reliable, can realize the control of the high-speed rotation of the DC brushless motor of the dynamic tuning gyroscope, has stable circuit performance, can work and use in a system with poor environmental conditions and higher dynamic requirements, and is safe and reliable.
Drawings
Fig. 1 is a schematic diagram of a dc brushless motor driving circuit based on CPLD control according to the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operating principles of the components, the manufacturing processes and the operation and use methods thereof, will be further described in detail with reference to the accompanying drawings, so as to help those skilled in the art to more completely, accurately and deeply understand the concept and technical solutions of the present invention:
the first embodiment of the present invention:
as shown in fig. 1, a dc brushless motor driving circuit based on CPLD control includes a control signal comparison circuit, a power bipolar transistor driving circuit, and a three-phase dc output circuit, where the control signal comparison circuit is connected to the power bipolar transistor driving circuit, and the power bipolar transistor driving circuit is connected to the three-phase dc output circuit.
Further, the CPLD control signal A, B and C are respectively connected with pins 3 of the voltage comparators N1, N2 and N3, pins 2 of the voltage comparators N1, N2 and N3 are all connected with reference voltage, pins 5 and 6 are respectively in short circuit, pin 8 is connected with voltage VCC, pin 1 and pin 4 are respectively connected with voltage VCC-, pin 7 of the voltage comparators N1, N2 and N3 is respectively connected with pull-down resistors R1, R2 and R3, and the other ends of the pull-down resistors R1, R2 and R3 are connected through common ground.
Model LM211DR voltage comparators of voltage comparators N1, N2, N3.
Further, pins 3 of the voltage comparators N1, N2, N3 are also connected with CPLD control signals a, B, C, respectively.
Further, the reference voltage connected to pin 2 of the voltage comparators N1, N2, N3 is 1.2V.
Further, the voltage VCC is 15V, and the voltage VCC-is-15V.
Further, the power bipolar transistor driving circuit comprises power bipolar transistors N4, N5, and N6, a pin 1 of the power bipolar transistor N4 is connected with one end of a pull-down resistor R1, a pin 1 of the power bipolar transistor N5 is connected with one end of a pull-down resistor R2, a pin 1 of the power bipolar transistor N6 is connected with one end of a pull-down resistor R3, pins 2 and 3 of the power bipolar transistor N4 are respectively connected with a voltage VCC2, pins 2 and 3 of the power bipolar transistor N5 are respectively connected with a voltage VCC2, pins 2 and 3 of the power bipolar transistor N6 are respectively connected with a voltage VCC2, pins 5 and 6 of the power bipolar transistor N4 are respectively connected with pins 5 and 6 of the power bipolar transistor N5, and pins 5 and 6 of the bipolar transistor N6 are both connected to a common terminal VSS, and a pin 4 of the power bipolar transistors N4, N5, N6 are respectively connected with positive terminals of high-speed switching diodes V2, V4, and V6.
The power bipolar transistors N4, N5, N6 are model PMD2001D power bipolar transistors.
Further, the three-phase direct current output circuit comprises high-speed switching diodes V1, V2, V3, V4, V5 and V6, current limiting resistors R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 and R15, and MOSFET array transistors N7, N8 and N9;
the negative end of the high-speed switch diode V1, one end of the current-limiting resistor R5, the positive end of the high-speed switch diode V2 and one end of the current-limiting resistor R7 are all connected with a pin 4 of the power bipolar transistor N4, the grid of the MOSFET array transistor N7A is connected with the other ends of the current-limiting resistors R4 and R5, and the grid of the MOSFET array transistor N7B is connected with the other ends of the current-limiting resistors R6 and R7;
the negative end of the high-speed switch diode V3, one end of the current-limiting resistor R9, the positive end of the high-speed switch diode V4 and one end of the current-limiting resistor R11 are all connected with the pin 4 of the power bipolar transistor N5, the grid of the MOSFET array transistor N8A is connected with the other ends of the current-limiting resistors R8 and R9, and the grid of the MOSFET array transistor N8B is connected with the other ends of the current-limiting resistors R10 and R11;
the negative end of the high-speed switch diode V5, one end of the current-limiting resistor R13, the positive end of the high-speed switch diode V6 and one end of the current-limiting resistor R15 are all connected with the pin 4 of the power bipolar transistor N6, the grid of the MOSFET array transistor N9A is connected with the other ends of the current-limiting resistors R12 and R13, and the grid of the MOSFET array transistor N9B is connected with the other ends of the current-limiting resistors R14 and R15;
the sources of the MOSFET array transistors N7A, N8A, N9A are all connected to a voltage VCC2-, and the sources of the MOSFET array transistors N7B, N8B, N9B are all connected to a voltage VSS.
Further, the drains of the MOSFET array transistors N7A, N8A, N9A are used as three-phase input of the dc brushless motor for driving the dc brushless motor.
The invention relates to a direct current brushless motor driving circuit based on CPLD control, which can be used in the fields of control of direct current brushless motors of gyroscopes in various dynamically tuned gyroscopes and the like. The problems that a direct current brushless motor of the dynamically tuned gyroscope is unstable in control, easy to resist interference and the like are solved.
The circuit of the invention mainly comprises a control signal voltage comparison circuit, a power bipolar transistor driving circuit and a three-phase direct current output loop, wherein the control signal voltage comparison circuit is connected with the power bipolar transistor driving circuit, the power bipolar transistor driving circuit is connected with the three-phase direct current output loop,
when the CPLD provides an input signal, the signal is compared with the reference voltage of the voltage comparator through the overvoltage comparator, the voltage comparator outputs a high level or a low level to drive the power bipolar transistor to work, and simultaneously, the upper bridge arm and the lower bridge arm inside the driving chip of the three-phase direct current output loop are switched on. The invention has stable control to the DC brushless motor and strong signal anti-interference capability, and can realize accurate and effective control of the CPLD to the DC brushless motor.
The specific working process is as follows:
when the control chip CPLD respectively controls signals A, B and C for the input signal CPLD, the signals are compared with reference voltage of the voltage comparator through the overvoltage comparators N1, N2 and N3, the voltage comparator outputs high level or low level, so that the power bipolar transistors N4, N5 and N6 are driven to work, and simultaneously, the upper bridge arm and the lower bridge arm inside the driving chips N7, N8 and N9 of the three-phase direct current output loop are switched on, because the switched-on two parts belong to an N-channel MOS field effect transistor and a P-channel MOS field effect transistor, the switching structure enables a stator winding to be between a certain voltage value and the ground, so that current can flow in two directions, three-phase outputs of A, B and C are obtained, and three-phase control of the direct current brushless motor is realized. The invention has stable control to the DC brushless motor and strong signal anti-interference capability, and can realize accurate and effective control of the CPLD to the DC brushless motor.
The present invention has been described in detail with reference to the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments described above, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without modification, are intended to be covered by the scope of the invention.
Claims (5)
1. A direct current brushless motor drive circuit based on CPLD control, its characterized in that: the power circuit comprises a control signal comparison circuit, a power bipolar transistor driving circuit and a three-phase direct current output circuit, wherein the control signal comparison circuit is connected with the power bipolar transistor driving circuit;
the control signal comparison circuit comprises voltage comparators N1, N2 and N3, pull-down resistors R1, R2 and R3, CPLD control signals A, B and C are respectively connected with pins 3 of the voltage comparators N1, N2 and N3, all the pins 2 of the voltage comparators N1, N2 and N3 are connected with reference voltage, a pin 5 and a pin 6 are respectively in short circuit, a pin 8 is connected with voltage VCC, the pin 1 and the pin 4 are respectively connected with voltage VCC-, a pin 7 of the voltage comparators N1, N2 and N3 are respectively connected with the pull-down resistors R1, R2 and R3, and the other ends of the pull-down resistors R1, R2 and R3 are connected through common ground;
the power bipolar transistor driving circuit comprises power bipolar transistors N4, N5 and N6, wherein a pin 1 of the power bipolar transistor N4 is connected with one end of a pull-down resistor R1, a pin 1 of the power bipolar transistor N5 is connected with one end of a pull-down resistor R2, a pin 1 of the power bipolar transistor N6 is connected with one end of a pull-down resistor R3, a pin 2 and a pin 3 of the power bipolar transistor N4 are respectively connected with a voltage VCC2, a pin 2 and a pin 3 of the power bipolar transistor N5 are respectively connected with a voltage VCC2, a pin 2 and a pin 3 of the power bipolar transistor N6 are respectively connected with a voltage VCC2, pins 5 and 6 of the power bipolar transistor N4 are respectively connected with pins 5 and 6 of the bipolar transistor N5, and a positive terminal 5 and 6 of the power bipolar transistor N6 are both connected to a common terminal VSS, and pins 4 of the power bipolar transistors N4, N5 and N6 are respectively connected with high-speed switching diodes V2, V4 and V6;
when the CPLD gives an input signal, the signal is compared with the reference voltage of the voltage comparator through the overvoltage comparator, the voltage comparator outputs a high level or a low level, so that the power bipolar transistor is driven to work, meanwhile, an upper bridge arm switch and a lower bridge arm switch in a driving chip of the three-phase direct current output loop are conducted, and as one of the two conducted parts belongs to an N-channel MOS field effect transistor and the other belongs to a P-channel MOS field effect transistor, the current can flow in two directions, so that the control of the direct current brushless motor is realized;
the three-phase direct current output circuit comprises high-speed switching diodes V1, V2, V3, V4, V5 and V6, current-limiting resistors R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14 and R15, and MOSFET array transistors N7, N8 and N9; the negative end of the high-speed switch diode V1, one end of the current-limiting resistor R5, the positive end of the high-speed switch diode V2 and one end of the current-limiting resistor R7 are all connected with a pin 4 of a power bipolar transistor N4, the grid of the MOSFET array transistor N7A is connected with the other ends of the current-limiting resistors R4 and R5, and the grid of the MOSFET array transistor N7B is connected with the other ends of the current-limiting resistors R6 and R7; the negative end of the high-speed switch diode V3, one end of the current-limiting resistor R9, the positive end of the high-speed switch diode V4 and one end of the current-limiting resistor R11 are all connected with the pin 4 of the power bipolar transistor N5, the grid of the MOSFET array transistor N8A is connected with the other ends of the current-limiting resistors R8 and R9, and the grid of the MOSFET array transistor N8B is connected with the other ends of the current-limiting resistors R10 and R11; the negative end of the high-speed switch diode V5, one end of the current-limiting resistor R13, the positive end of the high-speed switch diode V6 and one end of the current-limiting resistor R15 are all connected with the pin 4 of the power bipolar transistor N6, the grid of the MOSFET array transistor N9A is connected with the other ends of the current-limiting resistors R12 and R13, and the grid of the MOSFET array transistor N9B is connected with the other ends of the current-limiting resistors R14 and R15; the sources of MOSFET array transistors N7A, N8A, N9A are all connected to voltage VCC2-, and the sources of MOSFET array transistors N7B, N8B, N9B are all connected to voltage VSS.
2. The direct-current brushless motor driving circuit based on CPLD control according to claim 1, characterized in that: and pins 3 of the voltage comparators N1, N2 and N3 are also respectively connected with CPLD control signals A, B and C.
3. The direct-current brushless motor driving circuit based on CPLD control according to claim 1, characterized in that: the reference voltage connected to pin 2 of the voltage comparators N1, N2, N3 is 1.2V.
4. The direct-current brushless motor driving circuit based on CPLD control according to claim 1, characterized in that: the voltage VCC is 15V, and the voltage VCC-is-15V.
5. The direct-current brushless motor driving circuit based on CPLD control according to claim 1, characterized in that: and the drains of the MOSFET array transistors N7A, N8A and N9A are used as three-phase input of the DC brushless motor and used for driving the DC brushless motor.
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| CN202011574597.2A CN112737425B (en) | 2020-12-25 | 2020-12-25 | Direct current brushless motor drive circuit based on CPLD control |
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| CN202011574597.2A CN112737425B (en) | 2020-12-25 | 2020-12-25 | Direct current brushless motor drive circuit based on CPLD control |
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